Potomac is an unincorporated community and census-designated place (CDP) in Missoula County, Montana, United States.

[3] Potomac is in the southeastern part of Missoula County, in the valley of Camas Creek and Union Creek, which flows northwest to the Blackfoot River, part of the Clark Fork watershed.

Montana Highway 200 passes along the northern edge of the community, leading northeast 28 miles (45 km) to Ovando and west 23 miles (37 km) to Missoula.

According to the U.S. Census Bureau, the Potomac CDP has an area of 0.28 square miles (0.73 km2), all land.

This Missoula County, Montana state location article is a stub.